Check valve and modulator block including same

Abstract

Disclosed is a check valve and a modulator block including the same. An embodiment of the present disclosure provides a check valve comprising a valve housing including first and second internal flow passages each formed to pass through an interior of the valve housing and having an inlet through which a fluid is introduced and an outlet through which the fluid is discharged; a first opening and closing member provided in the first internal flow passage and opened and closed by a hydraulic pressure of the fluid; a second opening and closing member provided in the second internal flow passage and opened and closed by the hydraulic pressure of the fluid; and a stopper member press-fitted to the valve housing.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a national stage filing under 35 U.S.C § 371 of PCT application number PCT / KR2019 / 016183 filed on Nov. 22, 2019 which is based upon and claims the benefit of priorities to Korean Patent Application No. 10-2018-0145501, filed on Nov. 22, 2018 in the Korean Intellectual Property Office, which is incorporated herein in their entireties by reference.TECHNICAL FIELD[0002]The present disclosure relates to a check valve and a modulator block including the same, and more particularly, to a check valve used in a vehicle brake system and a modulator block including the same.BACKGROUND ART[0003]Generally, check valves are used in various fields with a configuration allowing only one-way flow of oil. As an example, a check valve may be provided in a brake system that controls the flow of oil so as to control a hydraulic pressure of a wheel cylinder.[0004]Korean Patent Publication No. 10-2013-009205 discloses a brake system. ...

AI Technical Summary

Benefits of technology

This patent relates to a check valve and a modulator block that can be integrated into one device, reducing the number of parts and simplifying the flow passage. The integrated check valve can control oil flow in one direction, regardless of the flow passage structure. This design allows for improved flexibility in flow control and reduces the volume and assembly requirements of the modulator block.

Problems solved by technology

In particular, in the case of having one suction passage and two discharge passages among the three-way flow passages, since two check valves must be installed to be respectively connected to each discharge channel, and a flow passage must be processed separately so that two suction flow passages are connected to each other, the flow passage structure becomes complicated.

Further, since each bore for installing the check valve in the modulator block has to be machined, the volume of the modular block increases, as well as the assembly process and cost increase accordingly.

Further, since the check valve requires a separate forced press-fitting process when installed on the modulator block, management becomes difficult because precise mounting is required to reduce defects caused by misassembly.

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